title: Amplified spontaneous emission in graded-index polymer optical fibers: theory and experiment.
abstract: In this work we analyze experimentally and theoretically the properties of amplified spontaneous emission (ASE) in a rhodamine-6G-doped graded-index polymer optical fiber. A theoretical model based on the laser rate equations describes the ASE features successfully. The dependence of the ASE threshold and efficiency on fiber length is analyzed in detail.
authors.forename: M Asunción
authors.initials: MA
authors.lastname: Illarramendi
authors.forename: Jon
authors.initials: J
authors.lastname: Arrue
authors.forename: Igor
authors.initials: I
authors.lastname: Ayesta
authors.forename: Felipe
authors.initials: F
authors.lastname: Jiménez
authors.forename: Joseba
authors.initials: J
authors.lastname: Zubia
authors.forename: Iñaki
authors.initials: I
authors.lastname: Bikandi
authors.forename: Akihiro
authors.initials: A
authors.lastname: Tagaya
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Koike